JP3706377B2 - Roof repair method - Google Patents

Description

  The present invention relates to a roof repair method for installing a new roof material on an existing roof material of an aging corrugated slate plate.

  When the corrugated slate plate roofing material of a large factory, warehouse, gymnasium, etc. becomes old, if this is removed and a new roofing material is installed, operation in the factory or use of the warehouse, etc. becomes impossible during the construction period. . Therefore, a new roof material made of a metal plate is installed on the corrugated slate plate without removing the existing roof material.

  In this case, in the conventional method in which a long drill tapping screw is passed through the new roof material and the existing roof material from above the new roof material, and the tip is screwed into the main building supporting the existing roof material, the new roof material is fixed. Construction waste, garbage, dust, etc. due to drilling of existing roofing materials and purlins fall.

  For this reason, large-scale curing is required, such as setting up tents to prevent falling objects in factories in operation, warehouses in use, and gymnasiums. Moreover, there is a risk that cracks, cracks, chips, etc. may occur in the slate plate of the existing roof that has deteriorated due to drilling or drill tapping tightening.

  In view of this, a repair method for installing a new roof material via a clamp fitting that can be fixed to the existing roof material without processing it has been proposed and implemented.

  For example, in the method of Patent Document 1 below, the clamp fitting is a substantially box shape made of a metal plate, the upper part is a cross-sectional shape along the mountain part of the new roofing material, and the bottom part is a cross-sectional shape along the mountain part of the existing roofing material. The bottom part uses a clamp fitting with a notch opening at its edge, and the notch is provided with a nut washer provided on a hook bolt projecting from the peak of the existing roofing material and the peak of the existing roofing material. A large number of clamp fittings fixed in this manner are fitted around the hook bolt shaft from the gap between them and the clamp fitting is fixed to the peak portion of the existing roofing material with the upper end of the hook bolt stored therein. A pile of a new roofing material is overlaid on top and screwed to a clamp fitting with a drill tapping screw.

Also, for example, in the construction method of Patent Document 2 below, the central portion of the clamp fitting is a mountain-shaped cross-section straddling the mountain portion of the existing roofing material, a hole is provided in the top end, and the support portion extends upward in a wing shape from the left and right leg ends of the central portion. Using the clamp fittings that come out, the upper end of the existing hook bolt protruding from the peak of the existing roof material is passed through the hole at the top end of the clamp fitting, and both leg ends of the clamp fitting are supported by the valleys of the existing roof fitting, and the hook The clamp fitting is fixed to the existing roof material by tightening the clamp fitting with the nut using the bolt, and the roof base material is installed on the support portion of the multiple clamp fittings fixed in this manner and arranged linearly. A new roofing material is screwed and fixed on the base material by screwing and fixing with a drill tapping screw or the like.
Japanese Patent Application Laid-Open No. 10-219936 JP 2002-146974 A

  According to the methods described in these publications, a new roof material can be installed without drilling holes in an existing slate roof material.

  By the way, the number of roof repair parts such as clamp fittings and roof base materials is reduced or eliminated as much as possible, and the thickness of the new roof material is reduced to reduce the repair cost. There is a demand to make it more advantageous in terms of earthquake resistance by reducing the weight.

  As a method of responding to this demand, a hole is formed in the new roof material at a position corresponding to the hook bolt protruding from the existing roof material, and the hook bolt is inserted into this hole so that the new roof material is directly placed on the existing roof material. A method of fixing the cover member covering the hook bolt insertion hole and the upper end of the hook bolt protruding therefrom to the new roof material by appropriate means can be considered.

  According to this method, there is no need for clamp fittings and roof base materials, and new roof materials can be directly superposed on and supported on existing roof materials, so conventional strength is not required, The plate thickness can be reduced, and aluminum or plastic roofing materials can be used.

  However, this method has the following problems. In other words, on existing slate plate roofs, especially large factory and gymnasium roofs, the installation position of existing hook bolts is not constant because every two or three mountain parts are installed depending on the building. Even every roof has every second and every third part. Further, a new hook bolt may be provided between the existing hook bolts for reinforcement after the roof construction. For this reason, when drilling a new roof material, it is necessary to inspect the arrangement of hook bolts for each part of the existing roof, and to drill a hole in the new roof material according to the arrangement, which is very troublesome. Implementation of the construction method is hindered.

  Therefore, the present invention is capable of drilling a new roof material with good workability corresponding to the position of the hook bolt on the roof of the existing corrugated slate plate roof, and installing this roof material on the existing roof material. An object of the present invention is to provide a roof repair method for reducing repair costs and reducing the weight of repair roofs.

  The present invention relates to a roof repair method for installing a new roof material of a corrugated metal plate or a corrugated plastic plate on an existing roof material of a corrugated slate plate in which an upper end of a hook bolt for fixing the roof material to a main building protrudes from a mountain portion. A step of forming a hook bolt insertion hole at a position corresponding to the hook bolt of the peak portion of the existing roof material on the peak portion of the new roof material, and an upper end of the hook bolt at the hook bolt insertion hole. A new roofing material placing step for inserting and placing the new roofing material on the existing roofing material, and a cover member by interposing a packing material on the hook bolt insertion hole of the new roofing material, A cover member installation step in which the upper end of the hook bolt is inserted into the hook bolt insertion hole formed at the upper end so as to straddle the mountain portion of the new roof material, and the hook bolt insertion hole of the cover member A new roofing material fixing step in which the cover member is tightened from above with a nut member from the upper end of the protruding hook bolt, and the new roofing material is pressed and fixed to the existing roofing material through the cover member, and the cover member, A cap mounting step for attaching a cap that covers the upper end of the hook bolt projecting from the hook bolt insertion hole and the outer insertion hole. In the above drilling step, it projects linearly from the peak portion of the existing roofing material at a position above the main building. A drilling tool with a conical tip is supported on the upper end of each of the hook bolts arranged in the above, and a new roofing material positioned so as to cover the existing roofing material is supported on the tip of the drilling tool, and a new roof is formed. The existing roofing material of the new roofing material that has been drilled by driving a driving tool around the support point of the material and penetrating the above drilling tool through the new roofing material. Allowed to complete the new roofing placing step by dropping to (claim 1).

  In this method, the new roofing material is positioned at the installation position on the existing roofing material and supported by the drilling tool, and when the driving tool is driven around the support point of the new roofing material, the tip of the drilling tool breaks through the new roofing material. The new roofing material is placed on the existing roofing material at the same time. After that, the installation of the new roofing material is completed by attaching the cover member and attaching a cap to the cover member.

  According to this method, even if the distance between hook bolts arranged in a straight line along the main building supporting the existing roofing material is irregular, drilling is performed in the new roofing material at a position corresponding to the hook bolt with good workability. Can do. In addition, there is no need for clamp fittings or base materials for fixing the new roofing material. In addition, the new roofing material is directly supported by the existing roofing material, so there is no need for large strength as in the past, and the plate thickness can be reduced, and aluminum plates and plastic plates can be used. The cost of repairing the roof can be reduced, and the repaired roof can be made lighter.

  As the drilling tool, a tool having a conical tip and having a vertical hole opening in the base end surface at the axial center is preferably used, and the upper end of an existing hook bolt is inserted into the vertical hole and supported by the hook bolt. . (Claim 2).

  As the driving tool, a tool having a driving end formed in a cylindrical shape is preferably used, and punching can be easily performed by driving around a support point by a drilling tool for a new roofing material. .

  In the new roofing material fixing step, as the nut member, a leaf spring nut having a ring shape and a plurality of leaf spring claws projecting in the center direction from the inner periphery thereof is projected from the hook bolt insertion hole of the cover member. A new roofing material can be fixed with good workability by passing the upper end of the hook bolt through the center of the leaf spring nut and tightening the upper end of the cover member with the leaf spring nut.

  FIG. 1 shows a cross section of the main part of a roof on which a new roof material is installed by the roof repair method of the present invention. The existing corrugated slate plate roof will be described with reference to FIG. The nut 301 attached to the upper end of the hook bolt 3 protruding from the peak portion is fixed to the washer 302 and the packing. The existing roof material 1 is fixed by tightening with respect to the mountain portion via the material 303.

  An embodiment of the present invention will be described. As shown in FIGS. 1 and 2, the new roof material 4 made of a metal plate has a waveform that matches the existing roof material 1, a width of 600 to 700 mm, and a length corresponding to the length in the flow direction of the roof (for example, about 5000 mm) is often used.

  The new roof material 4 is first perforated on the existing roof material 1. 2 and 3 show this drilling process, and the existing hook bolts 3 are arranged on every two or three mountain parts of the existing roofing material 1 at positions on each main building 2 (FIGS. 1 and 4). They are arranged linearly at intervals. In the drilling process, a drilling tool 51 is first supported on the upper end of each hook bolt 3 as shown in FIG. The drilling tool 51 is made of steel and has a frame shape including a cylindrical base end portion 511 and a conical processing portion 512, and the tip of the processing portion 512 is sharpened at an acute angle. A vertical hole 513 is formed in the axial center of the tool 51 so as to open to the base surface. The opening side of the vertical hole 513 is shaped to fit into the nut 301 of the existing hook bolt 3, and the portion extending into the processed portion 512 is shaped to allow the upper end of the hook bolt 3 to be inserted. A plurality of V-shaped grooves are formed on the outer periphery of the processed portion 512 in the vertical direction from the pointed end to the base end side, and a ridge 514 having a triangular cross section is formed between the grooves.

  The drilling tool 51 is supported by the hook bolt 3 by inserting the upper end of the hook bolt 3 protruding from the existing roof material 1 into the vertical hole 513. In this way, the drilling tool 51 is supported by each hook bolt 3 in the range of the existing roof material 1 to be repaired by the single new roof material 4.

  Next, one piece of the new roofing material 4 is positioned at the installation position on the existing roofing material 1 so as to cover the existing roofing material 1 from the top to the tip of the drilling tool 51 as shown in FIG. To support. Then, the driving tool 52 is driven from above around the support point of the peak portion of the new roofing material 4 supported at the tip of the drilling tool 51.

  The driving tool 52 has a columnar shape with the lower half portion being cylindrical, the inner diameter of the lower half portion is slightly larger than the outer diameter of the drilling tool 51, and the opening periphery of the lower end (driving end) 522 is a peak portion of the new roofing material 4. It is as a wave shape almost along. Moreover, the recessed part 521 is formed in the axis | shaft target position in the column part outer periphery.

  The driving tool 52 is erected on the peak portion of the new roofing material 4 with the driving edge 522 around the support point of the new roofing material 4 supported by the drilling tool 51. In this case, the concave portion 521 plays a role of determining the directionality of the driving end 522 with respect to the peak portion of the new roof material 4. Each support point of the new roofing material 4 is arranged linearly above the main building, and the roofing material 4 is thin (about 0.4 to 0.5 mm) and is supported by the tip of a sharp drilling tool 51. Therefore, it is possible to easily confirm which mountain portion has the support point by lightly pressing the roofing material 4 with fingers.

  Driving with the driving tool 52 is performed by hitting the head of the tool 52 with a small hammer. The new roofing material 4 is punched by the punching tool 51 by punching around the support point. As shown in FIG. 3 (B), the new roof material 4 falls on the existing roof material 1 and overlaps the roof material 1 as shown in FIG. 3B. The placing process is completed. The drilling tool 51 is removed by extracting from the upper end of the existing hook bolt 3 protruding from the hole 40 formed by punching the new roof material 4.

  Around the hole 40 for inserting the hook bolt formed by punching, a burr 41 is formed in a curled shape. However, this burr 41 does not hinder the subsequent new roof material fixing work. The reason why the burr 41 is generated in a state of being finely separated in the circumferential direction of the hole 40 is used as the drilling tool 51 as shown in FIG. . By separating the burrs 41, it is possible to prevent the shape of the formed holes 40 from becoming irregular, and to reduce the driving force required for forming the holes. Of course, the perforating tool 51 used for carrying out the present invention is not limited to the one having the ridges 514 formed thereon.

  FIG. 4 shows a process of fixing the new roof material 4 superimposed on the existing roof material 1. First, the packing material 6 is attached around the upper end of the existing hook bolt 3 protruding from the hole 40. The packing material 6 is a donut shape having a center hole, is a size covering the hole 40, is made of a thick and flexible material, and the hook bolt 3 is inserted into the center hole so as to cover the punched hole 40.

  Next, the cover member 7 is attached to the peak portion of the new roof material 4 so as to cover the packing material 6. The cover member 7 has a substantially bowl shape as a whole and has a cross-sectional shape that matches the peak portion of the new roofing material 4. A projection 71 is formed at the center of the top, and the top of the projection 71 hooks in the direction along the mountain of the main body. A long hole 72 for inserting a bolt is formed. The cover member 7 is set so as to cover the packing material 6 by inserting the upper end of the existing hook bolt 3 into the long hole 72.

  Next, by using the upper end of the existing hook bolt 3 protruding from the long hole 72 of the cover member 7, the cover member 7 is tightened from above with the nut member 8, so that the new roof material 4 is installed through the cover member 7. Press and fix to material 1.

  As the nut member 8, as shown in FIG. 5, a leaf spring knit having a polygonal shape, for example, a hexagonal ring shape, and a plurality of leaf spring claws 81 projecting obliquely upward from the inner periphery toward the center is suitable. Can be used. The leaf spring nut 8 is pushed by inserting the upper end of the hook bolt 3 into the center thereof, and the leaf spring nut 8 having the claw 81 engaged with the thread groove of the hook bolt 3 is tightened by engaging a hexagon wrench on the outer periphery thereof. Thereby, the packing material 6 is compressed and deformed, the cover member 7 is pressed against the new roof material 4 via the packing material 6, and the new roof material 4 is pressed against the existing roof material 1 and fixed.

  Finally, a cap 9 is put on the cover member 7 so as to cover the hole 72 and the upper end of the hook bolt 3 protruding therefrom (FIG. 6). The cap 9 is fixed to the cover member 7 by fitting a convex portion 91 projecting inward from the peripheral wall into a concave portion formed on the outer periphery of the cover member 7.

  In this way, the new roof material 4 is sequentially installed on the existing roof material 1. The drilling of the new roofing material 4 is facilitated on the existing roofing material 1 at the work site, and the new roofing material 4 is automatically placed on the existing roofing material 4 as soon as the hole 40 is punched out. Work efficiency is very good. Since the newly installed roofing material 4 is directly overlapped and supported on the existing roofing material 1, it does not require the strength of a conventional repaired roof that is locally supported via clamp fittings. The thickness can be reduced, and an aluminum plate or a fiber reinforced plastic plate can be used in addition to the steel plate. Since the repair roof is lighter, it is also advantageous in terms of earthquake resistance.

It is a principal part longitudinal cross-sectional view of the roof repaired with the construction method of this invention. (A) is a figure which shows the state which sets a drilling tool to the existing hook bolt, (B) is a perspective view of a drilling tool. (A) is a figure which shows the state which drives a driving tool into the new roof material supported by the drilling tool, (B) is a figure which shows the state by which the new roof material was drilled. It is a figure which shows the process of fixing a new roof material on the existing roof material. It is a perspective view of the leaf | plate spring nut used for fixation of a new roof material. It is a principal part perspective view of the fixed new roofing material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Existing roof material 2 Purlin 3 Hook bolt 4 New roof material 40 Hook bolt insertion hole 51 Drilling tool 513 Vertical hole 52 Driving tool 522 Driving end 6 Packing material 7 Cover member 8 Leaf spring nut 9 Cap

Claims (4)

The roof repair method of installing a new roofing material of a corrugated metal plate or corrugated plastic plate covering the existing roofing material of a corrugated slate plate in which the upper end of the hook bolt that fixes the roofing material to the main building protrudes from the mountain part,
A drilling step of forming a hook bolt insertion hole at the position corresponding to the hook bolt of the peak portion of the existing roof material on the peak portion of the new roof material,
A new roof material placing step of placing the new roof material on top of the existing roof material by inserting the upper end of the hook bolt into the hook bolt insertion hole;
Cover the cover member with a packing material above the hook bolt insertion hole of the new roof material, and insert the upper end of the hook bolt into the hook bolt insertion hole formed at the upper end of the cover material to straddle the peak of the new roof material Cover member installation process to install,
A new roof material for fixing the new roof material to the existing roof material through the cover member by tightening the cover member from above with a nut member from the upper end of the hook bolt protruding from the hook bolt insertion hole of the cover member Fixing process;
The cover member comprises a cap mounting step of attaching a cap that covers the hook bolt insertion hole and the upper end of the hook bolt protruding from the insertion hole,
In the drilling step, the upper end of each hook bolt that protrudes from the peak portion of the existing roofing material at a position above the main building and supports the drilling tool whose tip is conical, supports the existing roofing material. The new roofing material positioned so as to be covered is supported on the tip of the drilling tool, the driving tool is driven around the support point of the new roofing material, and the drilling tool is passed through the new roofing material to make a hole. A roof repair method in which the new roof material placement process is completed by dropping the drilled new roof material onto the existing roof material.   The roof repair method according to claim 1, wherein the drilling tool includes a vertical hole formed in an axial center and opening in a base surface, and the upper end of the hook bolt is inserted into the vertical hole and supported by the hook bolt.   The roof repair method according to claim 1, wherein a tool having a driving end formed in a cylindrical shape is used as the driving tool. In the new roofing material fixing step, as the nut member, a leaf spring nut having a ring shape and a plurality of leaf spring claws projecting in the center direction from an inner periphery thereof is projected from the hook bolt insertion hole of the cover member. 4. The roof repair method according to claim 1, wherein an upper end of the hook halt is passed through a center of the leaf spring nut and is tightened to an upper end of the cover member by the leaf spring nut.

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